Assertion : Parasites produce fewer young ones .
Reason : They have an easy life in their hosts .

Assertion. Most mammals are viviparous. Reason. They feed their young ones on their own milk.

Assertion : All pathogens are parasites but all parasites are not pathogens. Reason : Majority of the parasites confer benefits to the host.

Assertion : All pathogens are parasites but all parasites are not pathogens. Reason : Majority of the parasites confer benefits to the host.

Assertion :- Hooks and suckers are present in the parasitic form of flat worms. Reason :- It helps in absorbing nutrients from the host body.

Assertion (A) : Primary metabolites produced for the maintenance of life process of microbes . Reason (R) : Secondary matabolites are not produced by plants .

Assertion : It is possible to genetically engineer the organisms and produce vaccines . Reason : DNA vaccines are easy to produce .

Assertion : Loranthus is a partial parasite. Reason : Partial parasite depends on host for water& minerals only.

Assertion : In a semiconductor, the conduction electrons have a higher mobility than holes. Reason: The electrons experience fewer collisions.

Assertion : In a semiconductor, the conduction electrons have a higher mobility than holes. Reason: The electrons experience fewer collisions.